A. bacterium B. virus C. nematode D. aphid E. fungus Correct Answer: Option E - fungus
A. controlling erosion B. increasing soil fertility C. preventing desert encroachment D. reducing effects of environmental pollution E. increasing output of mineral oil Correct Answer: Option E - increasing output of mineral oil
If the ginning percentage of the samaru variety of cotton is 35, what will be the amount of raw cotton obtained from a 6 hectare farm with a yield of 330 kg seed cotton per hectare?
A. 46 kg B. 96.3 kg C. 114 kg D. 693 kg E. 6930 kg Correct Answer: Option E - 6930 kg
A. the dissolved nutrients are too diluted for crop plants B. the plants will not photosynthesize C. their leaves are turgid for respiration D. their physiological processes will be increased E. oxygen has been displaced to its deficiency for crops Correct Answer:...
A. sulphur B. copper C. iron D. zinc E. chlorine Correct Answer: Option A - sulphur
A. climate B. time C. parent material D. sunshine E. topography Correct Answer: Option D - sunshine
A. clay B. silt C. sand D. gravel E. humus Correct Answer: Option A - clay
Fertilizers that usually contain one nutrient which can be used directly by plants are commonly called?
A. organic fertilizers B. mixed fertilizers C. inorganic fertilizers D. compound fertilizers E. straight fertilizers Correct Answer: Option E - straight fertilizers
The different types of soil are determined by the relative amounts of each of the following components except?
A. rocks B. air C. water D. minerals E. organic matter Correct Answer: Option A - rocks